Tapered Roller Bearing

Tapered roller bearings refer to radial thrust rolling bearings whose rolling elements are tapered rollers. There are two kinds of small cone angle and large cone angle. The small cone angle mainly bears the combined radial and axial loads dominated by radial loads. It is often used in pairs and installed in reverse. The inner and outer races can be installed separately, and the radial and axial clearances can be adjusted during installation and use; The large cone angle mainly bears the combined axial and radial loads, which are mainly axial loads. Generally, it is not used to bear pure axial loads alone, but can be used to bear pure radial loads when arranged in pairs (the ends with the same name are installed opposite to each other).

The ability of a single row tapered roller bearing to bear axial load depends on the contact angle, that is, the angle of the raceway of the outer ring. The larger the angle, the greater the axial load capacity. The most used tapered roller bearings are single row tapered roller bearings. In the front wheel hub of the car, a small-sized double-row tapered roller bearing is used. Four-row tapered roller bearings are used in heavy machinery such as large cold and hot rolling mills.

The type code of the tapered roller bearing is 30000, and the tapered roller bearing is a separable bearing. In general, especially within the size range involved in GB/T307.1-94 "Rolling Bearings Radial Bearing Tolerances", the outer ring and inner components of tapered roller bearings are 100% interchangeable.

The angle of the outer ring and the diameter of the outer raceway have been standardized as the outer dimensions. Changes during design and manufacture are not allowed. So that the outer ring and inner assembly of the tapered roller bearing can be universally interchanged around the world.

Tapered roller bearings are mainly used to bear combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, it has larger load capacity and lower limit speed. Tapered roller bearings can withstand axial loads in one direction and limit axial displacement of the shaft or housing in one direction.